New Marine Water Pump O-Ring Compatible With Volvo Penta Mercury Mercruiser Johnson Evinrude Omc

WATER PUMP / LOWER UNIT O-RING — MULTI-BRAND MARINE APPLICATION:

MERCURY 4-CYL 4-STROKE EFI OUTBOARDS:
• Mercury 75 HP 4-Cyl 4-Stroke EFI Outboard (2006-2010)
• Mercury 90 HP 4-Cyl 4-Stroke EFI Outboard (2006-2010)
• Mercury Jet 80 HP 4-Cyl Outboard (1994-2005)

MERCURY V6 2.0L OUTBOARDS (3.125 BORE):
• Mercury 135 HP V6 2L 3.125 Bore 2-Stroke Outboard (1991-2000)
• Mercury 150 HP V6 2L 3.125 Bore 2-Stroke Outboard (1991-2005)

MERCURY V6 2.4L OUTBOARDS (3.375 BORE):
• Mercury 175 HP V6 2.4L 3.375 Chrome Bore Outboard (1990-1999)
• Mercury XR-4 150 HP V6 2.4L 3.375 Steel Bore Outboard (1988-1992)

MERCURY V6 2.5L OUTBOARDS (3.501 BORE):
• Mercury 200 HP V6 2.5L 3.501 Bore 2-Stroke Outboard (1991-2005)
• Mercury 2.5L EFI 150 HP (1992-1996, 2002-2010), 175 HP (1991-2001), 200 HP (1996-2006)
• Mercury 2.5L Jet: 105 HP (1992-1999), 110 HP (2006-2013), 140 HP (1992-2005)
• Mercury 2.5L Optimax: 115 HP (2000), 135 HP (1998-2012), 175 HP (2001-2014)
• Mercury 2.5L Pro Max: 150 HP (1994-1998), 200 HP (1994-2006), 225 HP (1994-2004)
• Mercury 2.5L XR6 150 HP (1992-1998), XRI 200 HP (1992-1997), XS 200 HP (2001-2006)

MERCURY V6 3.0L OUTBOARDS (3.625 BORE):
• Mercury 3L 225 HP V6 (1994-2001), Carb Sea Pro 225 HP (1995-2001)
• Mercury 3L EFI 200 HP (2002-2008), 225 HP (1994-2008), 250 HP (1994-2008)
• Mercury 3L Pro Max 300 HP (1998-2005), XB 250 HP (2000-2004)

MERCURY V6 PRO XS / XS / OPTIMAX (3.6265 BORE):
• Mercury 2.5L Pro XS 150 HP (2010-2018), 175 HP (2008-2018)
• Mercury 3.2L XS 300 HP (2006-2017)
• Mercury 3L Optimax 200 HP (1997-2018), 225 HP (1998-2018), 250 HP (2003-2014), 300 HP (2015-2018)
• Mercury 3L Pro XS 200 HP (2007-2018), 225 HP (2004-2018), 250 HP (2006-2018)

MARINER, MERCRUISER, JOHNSON/EVINRUDE, CHRYSLER/FORCE, VOLVO PENTA APPLICATIONS:
• All Mariner Models Requiring OEM 25-33504 by Part Number Match
• MerCruiser Models Requiring OEM 25-33504 / 8M0214926
• Johnson/Evinrude Outboards Requiring OEM 307239 (OMC/BRP)
• Chrysler/Force Outboards Requiring OEM 777387
• Volvo Penta Marine Engines Requiring OEM 3852071

O-RING SPECIFICATIONS:
• Material: Nitrile (NBR) Standard Marine Grade Rubber
• Color: Black
• Type: Water Pump / Lower Unit O-Ring Seal
• Function: Marine Engine Sealing

FUNCTIONAL APPLICATION — WATER PUMP / LOWER UNIT SERVICE:
Multi-brand, multi-application sealing O-ring used at water pump and lower unit service locations across the Mercury V6 outboard lineup spanning 1988-2018, plus Mariner, MerCruiser, Johnson/Evinrude, Chrysler/Force, and Volvo Penta applications. This is a routinely-replaced wear part during impeller and water pump service across virtually every modern Mercury V6 outboard from 2.0L through 3.2L (Optimax, EFI, Pro Max, Pro XS, XR6, XRI, XS, XB, Sea Pro, Jet) and 4-stroke EFI 75/90 HP variants.

SERVICE WHEN:
• Water Pump Impeller Replacement (Routine Service)
• Lower Unit / Gearcase Service
• Diagnosing Cooling System Issues
• Annual Maintenance on These Engines
• Rebuilding Water Pump Assembly

FITMENT NOTE:
This is an OEM-spec replacement O-ring with extensive cross-application across Mercury, Mariner, MerCruiser, Johnson/Evinrude, Chrysler/Force, and Volvo Penta engines. ALWAYS verify the correct OEM part number from your service manual before ordering — confirming Mercury 25-33504, OMC 307239, Volvo Penta 3852071, or 777387 is the specified part for your application. While this O-ring covers an extremely wide range of engines, individual sealing locations may use different O-ring dimensions.